US4635511A - Cutter control apparatus - Google Patents

Cutter control apparatus Download PDF

Info

Publication number
US4635511A
US4635511A US06/668,187 US66818784A US4635511A US 4635511 A US4635511 A US 4635511A US 66818784 A US66818784 A US 66818784A US 4635511 A US4635511 A US 4635511A
Authority
US
United States
Prior art keywords
cut
circuit means
cutter control
distribution
control apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/668,187
Other languages
English (en)
Inventor
Masanori Shirasu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Assigned to MITSUBISHI DENKI KABUSHIKI KAISHA reassignment MITSUBISHI DENKI KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SHIRASU, MASANORI
Application granted granted Critical
Publication of US4635511A publication Critical patent/US4635511A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
    • B23D36/0033—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length
    • B23D36/0041—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length the tool moving continuously
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y10T83/148—Including means to correct the sensed operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y10T83/159—Including means to compensate tool speed for work-feed variations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4653—With means to initiate intermittent tool action
    • Y10T83/4656—Tool moved in response to work-sensing means
    • Y10T83/4659—With means to vary "length" of product

Definitions

  • the present invention relates to a cutter control apparatus for controlling the position in which a workpiece is cut by a cutter, and more particularly to a cutter control apparatus having a correction device for automatically correcting the cutting position to make uniform the cut dimension of a piece cut by the cutter.
  • the cutter control apparatus as illustrated in FIG. 1 comprises a workpiece dimension detector 1 for detecting a dimension of a workpiece to be cut, a cut setting unit 2 for setting a reference dimension to be cut, a cutter control circuit 3 for comparing the detected dimension from the workpiece dimension detector 1 with the reference dimension setting from the cut setting unit 2 and for actuating a cutter of a cutting machine (not shown) when the dimensions compared are in agreement, a cut calculating circuit 4 for calculating the dimension of a piece actually cut by the cutting machine under the control of the center control circuit 3, and a display unit 5 for displaying the actual cut dimension as detected by the cut calculating circuit 4.
  • the cutter control circuit 3 actuates the cutter to cut off the workpiece to the set dimension.
  • the actual cut dimensions tend to disagree with the (reference) cut dimension settings, and are distributed in a certain range depending on a number of factors.
  • the operator samples the dimensions of a plurality of cut pieces as calculated by the cut measuring circuit 4 and displayed by the display unit 5. The distribution of the actual cut dimensions is then determined by way of a statistical method, e.g. using a frequency table. If it is judged from the dimension distribution that a particular cut dimension is abnormal, then the operator corrects the control of the cutting position in the cutter control circuit 3 to avoid the production of a defective cut piece.
  • the present invention is intended to eliminate the foregoing drawbacks of conventional apparatus. It is therefore an object of the present invention to provide a cutter control apparatus having a correction device for more quickly detecting an abnormal cut made by a cutting machine, automatically correcting the cutting position control in the cutter control apparatus when the central value of the distributed (actual) cut dimensions disagrees with a reference cut dimension setting, and quickly notifying the operator of when the fraction of defective pieces exceeds an allowable fraction, whether due to abnormal cutting or other abnormal conditions.
  • a primary object of the invention is to carry out a quality control so that the cut dimension can be made uniform by using statistical errors obtained by statistical analysis.
  • the correction operation is carried out once a lot (defined by the number of cutting operations).
  • FIG. 1 is a block diagram of a conventional cutter control apparatus
  • FIG. 2 is a block diagram of a cutter control apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flow chart illustrating the operation of the cutter control circuitry of FIG. 2.
  • FIGS. 4A and 4B illustrate a flow chart, somewhat more detailed than that of FIG. 3, showing in more detail the control operations of the CPU of FIG. 2.
  • FIG. 5 is a schematic diagram of an example of the circuitry contained in the Thyristor Control Circuit of FIG. 2.
  • a correction device (circuit) 6 serves the function of determining the distribution of actual dimensions cut by a cutting machine and delivers a cutting position correction signal to the cutter control circuit 3 when the central value (mean value, for example) of the distributed dimensions deviates from a cut dimension setting.
  • the correction device 6 also emits or displays an alarm when the fraction of defective pieces determined by the dimension distribution is greater than an allowable fraction, thereby notifying the operator of an abnormal condition.
  • the correction device 6 includes a cut dimension calculating circuit 4 for calculating an actual dimension of a cut made by the cutting machine, and a distribution computing circuit 8 for programmably processing the cut dimension information using a statistical method such as, e.g., a frequency table or a control chart, to determine the distribution of actual cut dimensions.
  • the computing circuit 8 generates a center abnormal signal when the central value of the dimension distribution deviates from a cut dimension setting, and issues a signal indicative of an excessive fraction of defective pieces when the fraction of defective pieces determined from the dimension distribution is larger than an allowable fraction.
  • the correction device 6 further comprises a correction-value computing circuit 9 responsive to the center abnormal signal for computing a correction value for a cutting position of the cutting machine and supplying a corresponding correction signal to the cutter control circuit 3, and an alarm generator 10 for generating or displaying an alarm signal in response to the signal indicative of the excessive fraction of defective pieces.
  • the operation of the cutter control apparatus of the foregoing construction is as follows.
  • the cutting position of the cutting machine is controlled by the cutter control circuit 3 in the same manner as in a conventional machine. More specifically, the cutter control circuit 3 compares a workpiece dimension as detected by the workpiece dimension detector 1 with a reference dimension setting entered from the cut dimension setting unit 2, and operates a cutter or the like of the cutting machine to cut off the workpiece when the detected and set dimensions coincide with each other.
  • the cutter control apparatus of the invention is different from the prior operator-controlled apparatus in the manner of detecting and dealing with an abnormal cut dimension.
  • actual cut dimensions are calculated by the cut dimension calculating circuit 4 and stored in a memory circuit 7.
  • the distribution computing circuit 8 then prepares a frequency table, for instance, to find a distribution of the actual cut dimensions.
  • the distribution computing circuit 8 issues a center abnormal signal to the correction-value computing circuit 9.
  • the correction-value computing circuit 9 is responsive to the center abnormal signal for computing a correction value for the cutting position, and delivering such a value as a correction signal to the cutter control circuit 3.
  • the distribution computing circuit 8 may, for example, compare the distribution of the actual cut dimensions with a control limit in a control chart. If the fraction of defective pieces is found to exceed an allowable fraction, then the distribution computing circuit 8 issues a first indicating signal indicative of an abnormal fraction of defective pieces to the alarm generator 10. There are various possible causes for such an abnormal defective fraction, including a deviation of the distribution center from the cut dimension setting, as described above, or an extension of the distribution range beyond an allowable range of cut dimensions. However, the distribution computing circuit 8 issues the first indicating signal irrespective of the causes thereof. In response to such a signal, the alarm generator 10 produces or displays an alarm signal, letting the operator know immediately that the cutting machine has encountered an abnormal condition. Based on this first indicating signal, the operator can now ascertain whether or not correction of the cutting position is appropriate, and if necessary can shut off the cutting machine to prevent any further defective products from being produced.
  • FIG. 2 The structure and operation of FIG. 2 is now described in more detail with reference to the flow charts of FIGS. 3, 4A and 4B as follows.
  • a workpiece dimension detector 1 operates the detect a workpiece running speed and a workpiece running length per a certain period of time by counting an output pulse signal which is produced by a pulse oscillator operable to produce 1500 output pulses per one revolution of a measuring roller, the measuring roller directly contacting the running workpiece. This output signal of the detector 1 is applied to both a cutter control circuit 3 and a cut measuring circuit 4.
  • the cutter control circuit 3 comprises a CPU, a thyristor control circuit for carrying out a follow-up control in response to the output of the CPU, a shearing blade drive motor and a pilot generator.
  • the dimension measuring circuit 4 operates to calculate the actual cut dimension of a workpiece by counting the output pulses produced by the pulse generator in the detector 1 during a period defined by the cutting operation completion pulses. Assuming that the pulse generator generates 1500 output pulses per one revolution of the measuring roller, the actual cut length is expressed as (n/1500) ⁇ l, where n is the number of pulses generated during the period and l the circumferential length of the measuring roller.
  • the cut length display unit 5 operates to display the cut dimension in a digital mode.
  • the memory circuit 7 is adapted to store 200 data sets, each representing the actual cut length, and to be reset at the end of the correction operation.
  • the computing circuit 8 starts its calculating operation.
  • the circuit 9 operates to compute, and send to the CPU, a correction value of [predetermined (preset) value-x].
  • the alarm circuit 10 operates to generate an alarm when the computed value exceeds the limit allowance value of the ⁇ n and x.
  • FIG. 5 is an illustration of the circuitry which may be contained within the Thyristor Control Circuit of FIG. 2.
  • SC AMP designates a speed control amplifier operable to control the rotation speed of the drive motor M so as to coincide with that determined according to the output of the CPU.
  • CC AMP designates a current control amplifier operable to control the current flowing through a main circuit. The current is detected by an AC current transformer ACCT and then converted to a DC level signal to be applied to the current control amplifier.
  • VC AMP designates a voltage control amplifier operable to control a voltage appearing at the main circuit. The voltage is detected and converted to a control level signal by a voltage sensor VS.
  • GPG designates a gate pulse generator operable to receive the output of the VC amplifier to carry out the gate phase control to thereby control the drive motor M.
  • the calculation results are automatically displayed in a display device so that an operator can visually judge whether or not a correction operation is required.
  • a correction operation is not carried out for each cutting operation, but, rather, a correction operation is carried out for each production lot in which the predetermined number of cutting operations is accomplished. If no correction is required, a control inhibiting signal can be easily issued in the first control step (1) of the flow chart (FIG. 4A).
  • an actual cut dimension can be easily controlled statistically.
  • the cutter control apparatus has a correction device
  • other control apparatus such as a compressor control apparatus or a machining device control apparatus may be equipped with such a correction device.
  • the display unit 5 may comprise a dot matrix display unit, a CRT monitor display unit, or a computer display unit.
  • the cutter control apparatus of the present invention includes, in addition to a conventional cutter control apparatus, a correction device for quickly detecting an abnormal cut made by a cutting machine, for automatically correcting a deviation from a cut dimension setting, and for notifying the operator of an increased fraction of defective pieces due to any abnormal conditions, including an incorrect dimensional cut.
  • a correction device for quickly detecting an abnormal cut made by a cutting machine, for automatically correcting a deviation from a cut dimension setting, and for notifying the operator of an increased fraction of defective pieces due to any abnormal conditions, including an incorrect dimensional cut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Control Of Position Or Direction (AREA)
  • Numerical Control (AREA)
US06/668,187 1982-04-29 1984-11-05 Cutter control apparatus Expired - Fee Related US4635511A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57-72979 1982-04-29
JP57072979A JPS58189710A (ja) 1982-04-29 1982-04-29 切断機制御装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06489292 Continuation-In-Part 1983-04-28

Publications (1)

Publication Number Publication Date
US4635511A true US4635511A (en) 1987-01-13

Family

ID=13505009

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/668,187 Expired - Fee Related US4635511A (en) 1982-04-29 1984-11-05 Cutter control apparatus

Country Status (3)

Country Link
US (1) US4635511A (enrdf_load_stackoverflow)
JP (1) JPS58189710A (enrdf_load_stackoverflow)
DE (1) DE3315520A1 (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257567A (en) * 1992-05-26 1993-11-02 Xerox Corporation Sheet cutting apparatus
US5634388A (en) * 1991-10-02 1997-06-03 Kabushiki Kaisha Tokyo Horaisha Mark cutting apparatus and method of controlling same
US5826479A (en) * 1993-08-03 1998-10-27 Nippondenso Co., Ltd. Cutting device
US5979282A (en) * 1996-08-12 1999-11-09 Emtec Magnetics Gmbh Cutter-infeed apparatus for cutting installations for tapes, in particular magnetic tapes
US20030075029A1 (en) * 2001-10-24 2003-04-24 Franklin Kent Allan Feedforward control system for an elastic material
US7004053B1 (en) * 2000-03-15 2006-02-28 Kimberly-Clark Worldwide, Inc. System for measuring and controlling cut length of discrete components in a high-speed process
US20070012146A1 (en) * 2005-07-14 2007-01-18 Robert Workman Electronic paper cutting apparatus and method
US20070034061A1 (en) * 2005-07-14 2007-02-15 Robert Workman Electronic paper cutting apparatus and method for cutting
US20070215248A1 (en) * 2006-03-17 2007-09-20 Benoit Carpentier Closed-loop cutting system
US20090000437A1 (en) * 2005-07-14 2009-01-01 Provo Craft And Novelty, Inc. Methods for Cutting
US20090013838A1 (en) * 2005-07-14 2009-01-15 Johnson Jonathan A Method of Cutting a Shape
US7802504B1 (en) * 2002-06-21 2010-09-28 Smart Bottle Inc. High speed transverse cutter for webs
US8201484B2 (en) 2005-07-14 2012-06-19 Provo Craft And Novelty, Inc. Blade housing for electronic cutting apparatus
US11311024B2 (en) 2009-12-23 2022-04-26 Cricut, Inc. Foodstuff crafting apparatus, components, assembly, and method for utilizing the same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920495A (en) * 1988-07-15 1990-04-24 Gfm Holdings Ag Sheet cutting machine
JPH0369726U (enrdf_load_stackoverflow) * 1989-11-06 1991-07-11
DE4308934B4 (de) * 1993-03-19 2006-08-10 Siemens Ag Verfahren und Vorrichtung zum Steuern einer Schnittvorrichtung zum Zerteilen von strangförmigem durchlaufendem Material
US5571067A (en) * 1993-11-19 1996-11-05 Ranpak Corp. Cushioning conversion machine including a length measuring device
IL114694A (en) * 1994-07-22 2000-01-31 Ranpak Corp Cushioning conversion machine
US6524230B1 (en) 1994-07-22 2003-02-25 Ranpak Corp. Packing material product and method and apparatus for making, monitoring and controlling the same
US6179762B1 (en) * 1994-07-22 2001-01-30 Ranpak Corp. Cushioning conversion machine
US5829231A (en) * 1996-11-14 1998-11-03 Ranpak Corporation Automated cushioning producing and filling system
WO2004041653A1 (en) 2002-11-01 2004-05-21 Ranpak Corp. Packaging system with volume fill measurement

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181403A (en) * 1962-08-03 1965-05-04 Logic Systems Inc Control system
SU197709A1 (enrdf_load_stackoverflow) * 1965-02-20 1967-08-18
US3355973A (en) * 1965-03-10 1967-12-05 Cutler Hammer Inc Automatic size pre-set and automatic length adjustment system for cut-off machines and the like
US3411388A (en) * 1965-01-11 1968-11-19 Cutler Hammer Inc Integrated sheet production control system
US3628410A (en) * 1969-11-21 1971-12-21 S & S Corrugated Paper Mach Cutoff control for cutting long sheets
US3668957A (en) * 1969-08-08 1972-06-13 Koppers Co Inc Sheet length control system
US4274317A (en) * 1977-10-19 1981-06-23 Baumgartner Papiers S.A. Method of monitoring a continuously advancing string material
US4384500A (en) * 1980-11-20 1983-05-24 Owens-Illinois, Inc. Registration control for a label cutoff apparatus
US4464959A (en) * 1981-05-11 1984-08-14 Bethlehem Steel Corp. Adaptive control for a dividing shear

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1309235A (en) * 1969-05-13 1973-03-07 Dunlop Holdings Ltd Cutting material into lengths
GB1459763A (en) * 1973-02-07 1976-12-31 Masson Scott Thrissell Eng Ltd Control systems
US4020406A (en) * 1974-06-07 1977-04-26 Rengo Kabushiki Kaisha Web cutting control system
JPS5151084A (ja) * 1974-10-29 1976-05-06 Rengo Co Ltd Shiitosetsudanseigyohoshiki
DE2707141A1 (de) * 1977-02-18 1978-08-24 Kraft Gmbh Einrichtung zur regelung einer stueckige lebensmittel in scheiben oder portionen schneidenden schneidmaschine
JPS5548517A (en) * 1978-10-04 1980-04-07 Nasuko Kk Cutting controller

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181403A (en) * 1962-08-03 1965-05-04 Logic Systems Inc Control system
US3411388A (en) * 1965-01-11 1968-11-19 Cutler Hammer Inc Integrated sheet production control system
SU197709A1 (enrdf_load_stackoverflow) * 1965-02-20 1967-08-18
US3355973A (en) * 1965-03-10 1967-12-05 Cutler Hammer Inc Automatic size pre-set and automatic length adjustment system for cut-off machines and the like
US3668957A (en) * 1969-08-08 1972-06-13 Koppers Co Inc Sheet length control system
US3628410A (en) * 1969-11-21 1971-12-21 S & S Corrugated Paper Mach Cutoff control for cutting long sheets
US4274317A (en) * 1977-10-19 1981-06-23 Baumgartner Papiers S.A. Method of monitoring a continuously advancing string material
US4384500A (en) * 1980-11-20 1983-05-24 Owens-Illinois, Inc. Registration control for a label cutoff apparatus
US4464959A (en) * 1981-05-11 1984-08-14 Bethlehem Steel Corp. Adaptive control for a dividing shear

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634388A (en) * 1991-10-02 1997-06-03 Kabushiki Kaisha Tokyo Horaisha Mark cutting apparatus and method of controlling same
US5257567A (en) * 1992-05-26 1993-11-02 Xerox Corporation Sheet cutting apparatus
US5826479A (en) * 1993-08-03 1998-10-27 Nippondenso Co., Ltd. Cutting device
US5979282A (en) * 1996-08-12 1999-11-09 Emtec Magnetics Gmbh Cutter-infeed apparatus for cutting installations for tapes, in particular magnetic tapes
US7004053B1 (en) * 2000-03-15 2006-02-28 Kimberly-Clark Worldwide, Inc. System for measuring and controlling cut length of discrete components in a high-speed process
US20030075029A1 (en) * 2001-10-24 2003-04-24 Franklin Kent Allan Feedforward control system for an elastic material
US7047852B2 (en) * 2001-10-24 2006-05-23 Kimberly-Clark Worldwide, Inc. Feedforward control system for an elastic material
US7802504B1 (en) * 2002-06-21 2010-09-28 Smart Bottle Inc. High speed transverse cutter for webs
US20070034061A1 (en) * 2005-07-14 2007-02-15 Robert Workman Electronic paper cutting apparatus and method for cutting
US20090000437A1 (en) * 2005-07-14 2009-01-01 Provo Craft And Novelty, Inc. Methods for Cutting
US20090013838A1 (en) * 2005-07-14 2009-01-15 Johnson Jonathan A Method of Cutting a Shape
US20070012146A1 (en) * 2005-07-14 2007-01-18 Robert Workman Electronic paper cutting apparatus and method
US20110232437A1 (en) * 2005-07-14 2011-09-29 Provo Craft And Novelty, Inc. Methods for Cutting
US8201484B2 (en) 2005-07-14 2012-06-19 Provo Craft And Novelty, Inc. Blade housing for electronic cutting apparatus
US20070215248A1 (en) * 2006-03-17 2007-09-20 Benoit Carpentier Closed-loop cutting system
US8117952B2 (en) * 2006-03-17 2012-02-21 Benoit Carpentier Closed-loop cutting system
US11311024B2 (en) 2009-12-23 2022-04-26 Cricut, Inc. Foodstuff crafting apparatus, components, assembly, and method for utilizing the same

Also Published As

Publication number Publication date
DE3315520C2 (enrdf_load_stackoverflow) 1987-09-03
JPS58189710A (ja) 1983-11-05
DE3315520A1 (de) 1983-11-03

Similar Documents

Publication Publication Date Title
US4635511A (en) Cutter control apparatus
US4384500A (en) Registration control for a label cutoff apparatus
US7085665B2 (en) Method for automatically compensating for unbalance correction position and correction amount in balancing machine
US6441342B1 (en) Monitor for electric arc welder
US3946212A (en) Automatic quality control system
US20090030545A1 (en) Numeric control device of machine tool
US4426898A (en) Registration control method for a label cutoff apparatus
EP1923169B1 (en) Motor control apparatus
EP0169284A2 (en) Automatic calibration of sensor circuits in gear shapers
JPS5969248A (ja) 工具径自動計測補正方法
US11376701B2 (en) Tool replacement timing management system
CN119126676B (zh) 加工机床的控制系统及其控制方法
US6859680B2 (en) Numerical controlling unit having tool-breakage detecting function
JPS58137529A (ja) 放電加工の位置決め方法
US4656857A (en) Method for cutting uncoiled web
KR890000578B1 (ko) 주축 회전수 체크장치
US4459885A (en) Registration control for a label cutoff apparatus
JPH03155484A (ja) レーザ加工機の自動工具径補正方法
EP3305451A1 (en) Machining time-estimating method for wire electrical discharge machine and control device for wire electrical discharge machine
US20040003026A1 (en) Data management device for precise quality control
EP0157997A2 (en) Programmable multi-channel tool monitor with multiple alarm limits and sensor taring
JPS5882650A (ja) 工作機械における送り制御方法
JP3391051B2 (ja) 切断機
JP3027897B2 (ja) タンデム圧延機の速度制御方法及び装置
JPH0839399A (ja) 工作機械の熱変位補正装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: MITSUBISHI DENKI KABUSHIKI KAISHA, NO. 2-3, MARUNO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SHIRASU, MASANORI;REEL/FRAME:004594/0630

Effective date: 19860629

Owner name: MITSUBISHI DENKI KABUSHIKI KAISHA,JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHIRASU, MASANORI;REEL/FRAME:004594/0630

Effective date: 19860629

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19950118

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362